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CVSS 8.0 HIGH Zero-Day Exploit

CVE-2026-56099: OpenBSD mpls_do_error: Remote Kernel Stack Disclosure via MPLS Label Stack Over-read

<p>Posted by shj on Jun 20</p>------------------------------------------------------------------------<br> OpenBSD mpls_do_error: Remote Kernel Stack Disclosure via MPLS Label <br> Stack Over-rea…

8.0CVSS Score
HIGHSeverity
NOCISA KEV
Zero-Day ExploitImpact Type

📋 Vulnerability Details

CVE IDCVE-2026-56099
VendorSecLists
Affected ProductMultiple Targets
Vulnerability TypeZero-Day Exploit
CVSS Score8.0 (HIGH)
Actively Exploited❌ No known exploitation
Patch StatusSee Vendor Advisory →
Reported ByCYBERDUDEBIVASH SENTINEL APEX Intelligence (via fulldisclosure)

🔬 Technical Analysis

<p>Posted by shj on Jun 20</p>------------------------------------------------------------------------<br> OpenBSD mpls_do_error: Remote Kernel Stack Disclosure via MPLS Label <br> Stack Over-read<br> ------------------------------------------------------------------------<br> <br> Affected: OpenBSD -current prior to 2026-06-18 (fixed in -current)<br> Vendor: OpenBSD<br> Severity: Medium<br> Reporter: Argus Systems<br> Date: 2026-06-12<br> CVE: CVE-2026-56099<br> <br> 1. SUMMARY<br> ==========<br> &

📚 Advisory References

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